| 摘要 |
<p>ADJUSTABLE ORIFICE FOR A SPRAYER UNIT An assembly (1) for providing a number of different size orifices for a sprayer unit, such as a hand-held paint sprayer, has an orifice plate (12) with a number of orifices (17) of different diameters radially disposed near a periphery of the plate. The plate (12) has a centrally disposed pivot pin (13, 14) which is received in a complementary slot (15,16) in the nozzle guard (2) for the sprayer unit. The orifice plate (12) has a like number of detents (23) in the periphery thereof, and is held in place both within the slot and so as to align one of the orifices with the discharge nozzle (6) for the sprayer unit, by a clip spring (19) having angled free ends (24) respectively received in detents (23) on opposite sides of the orifice plate. Axial movement of the orifice plate is restrained by tightening the nozzle guard (2) which is received by threads (5, 51) on the sprayer unit. When a different orifice size is desired, the nozzle guard (2) is loosened, the orifice plate (12) is rotated about the pivot pin (13, 14) to position the desired orifice (17) in front of the discharge nozzle (6), and the nozzle guard (12) is again tightened.</p> |
